Flushing-valve.



J. L. BECK.

FLUSHING VALVE.-

APPLICATION FILED Aus.a1.1912. RENEWED JULY 14, 1915.

1 ,172,42 1. Patented Feb. 22, 1916.

WITNESSES: 1N VENTOR,

ATTORNEY.

To all whom it may concern:

Be it known that LJOHN L. BECK, a

v UNITED sTAT sr nr curios...

JOHN L. BECK, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOB. BY DIRECT ANDMESNE ASSIGNMENTS; TO THE STERLING VALVE COMPANY, OF SPRINGFIELD, MASSA-CHUSETTS, A CORPORATION OF MASSACHUSETTS. v I V FLUSI-IING-VALVE.

Specification of Letters Patent.

Application filed August 31, 1912, Serial No. 718,048. Renewed July 14,1915. Serial lilo. 39,895.

citizen of the United States of America, and resident of Springfield, inthe county of Hampden and State of Massachusetts, have invented certainnew and useful Improvements in Flushing-Valves, of which the followingis a full, clear, and exact description.

This invention relates to flushing valves for water closets andanalogous apparatuses of a class in which the improved appliances areconnected with the water supply pipe directly and in part controlledthereby.

The object of the invention is to provide a-flushing valve ofcomparative simplicity and cheapness of construction, and one which isentirely reliable and efficient in operation and susceptible ofprotracted use without derangement or the necessity for the repairing orreplacement of parts.

Another object is to provide a flushing valve, all parts of which aresupported one by another so that when to be used the same may beconnected as a unit with the pipe for supplying water under pressure andwith the pipe which leads to a water closet bowl.

The flushing valve is one characterized by the employment therein ofavalve which closes a valve seat opening between thewater supply or inletand the bowl connecting outlet, and which valve is normally held in itsclosed position by the preponderating pressure of the water supplyexerted against a piston appurtenant to the valve, which piston is ofgreater area than that of the valve-seat-opening,the opening of thevalve being insured by the pressure of the water supply when theaforementioned preponderating'pressure is sufficiently reduced orrelieved.

The invention is described in conjunction with the accompanying drawingsand is set forth in the claim.

In the drawings: Figure 1 is a central vertical sectional view throughthe improved fiushing valve. Fig. 2 is a partial horizontal section online 2-2, Fig. 1.

Describing the flushing valve apparatus specifically as the same hasbeen devised by me, A. represents a valve body formed with inlet andoutlet passages a, b, with which the pipe B for supplying water underpressure and the pipe C to be connected with the bowl are joined. The.valve body is made with an internal partition (Z separating thesaidpassages a and Z), and having a valve-seat-opening 7 therethrough.said valve body has at its forward side an integrally formed hollowscrew threaded hub e, the axis of which is coincident with that ofthevalve seat opening.

D represents a cylindrical casing, the rear end of. which is screwthreaded and shouldered for making a connection with the hollow valvebody hub e, as shown, and

this casing has a chamber F in its forward end portion of greaterdiameter than that of the valve seat opening 7, and it has its reartubular portion G of a contracted diameter:

J represents a stem slidably guided through the contracted tubularportion G of the casing, the same being provided with the valve H at itsrear end for coaction with, and to normally close, the valve-seatopeningf, and this stem J is provided at Patented Feb. 22, 1916.

The

its forward end with a piston K forming a movable wall. in the cylinderchamber'F. The said valve stem and "piston are constructed with acontracted passage 9 for establishing. communication between the valveseat opening,-at which the pressure of the water supply is constantlypresent, and the cylinder chamber F. v

The cap or headL closes the forward end of the cylinder and has anopening therethrough with which a relief pipe M is coni nected,thepassage through said pipe being of greater diameter than theaforementioned contracted passage 9. This pipe M, or coupled extensionthereof, is continued to connectionfor waste with the outlet conduitleading from the valve body. A; and the portion of the said pipe M whichis adjacent its connection with the cylinder-closing cap or .head L, isformed as a body or casingfor thecock or rotative valve 0, for

opening and closing the relief passage. On the stem or extended end ofthis'cock O is affixed a small spur gear P with .which mesh the teeth ofa vertically disposed rack bar Q. This rack bar extends and is slidablethrough a cylindrical liquid containing casing R, the same having aclosed bottom and a detachably formed closing head or cap,such bottomand head being provided with stuffing boxes for preventing leakagethrough the opening in which the rack bar is movably guided.

The rack bar has a head or button it at its upper end to receive manualpressure for securing the opening operation of the valve;

the piston passage, or passages 2', but the said valve plate has aminute opening m which is adapted to register with the piston passage2'.

In practice and as shown, the piston is formed with separated upper andlower walls, each having the passages 2' therein, and having appurtenantthereto duplicated valve/plates with closing springs, each with theminute opening m,-this duplication while approved being not an absolutenecessity.

U represents a spiral spring in compres sion under, and exertingpressure upwardly on the piston, and in effect to the rack bar.

Assuming the valve H is in its position to close the valve-seat-openingf, and the cock 0 is closed, the valve will be maintained in such closedpositionby reasonof the preponderating force exerted thereon from thepressure supply through the contracted passage in theforward portion ofthe cylinder chamber F.

By downward pressure on thehead h of the rack bar Q, whereby the latteris downwardly moved, such rack barcauses a rotative movement of the gearP and an open ing of the cock O,'which immediately relieves the pressurein the cylinder chamber F and leaves the pressure of the water supplyeffective to force the valve to the open position shown in the drawing.

On the release of the pressure downwardly on the rack bar, the same isfree to be slowly elevated .under the reactive force of the spring U,but only so fast as the oil, glycerin, or other liquidin the, upperportion of the cylinder R may be displaced through the minute openingson in the valve plates j to the chamber in the cylinder below the valvepiston. The reversed movement of the rack bar thus imparted will effectthe turningv of the cock 0 and the closing of the relief passage M,whereupon the hydraulic pressure accumulating in the cylinder chamberF,which latter, is of greater diameter than that of thevalve-seat-opening,will effect the forcing of the main valve H "of theapparatus home to its closed position, and maintain it closed. Thespiral spring V in thecylinder chamber between the head L and pistonl 1Cis a provision of preference and not of necessity, the ,sameaccelerating the pistonin theinitial portion of its valve-closingmovement.

The lower portion of the rack bar and the pinion provided cock 0 andportion of the.

relief pipe containing the latter are inclosed by a sectionally formedcasing W through,

the bottom of which a screw 8 is adjustably applied and havlng combinedtherewlth a lock nut t. The sa d screw serves as, an

adjustable abutment to limit the downward thrust of the rack bar wherebythe length of time during which the valve will be open for flushing willberegulatedr It is apparent from the drawings that the valve H, its stemJ and the piston are sectionally formed and screw united, as'also arethe rack bar and the valve provided portions of the piston in the.cylinder R; and cup leathers are provided for thepiston Kand the stem J,all for practicability of construction and for manifest utility in theperfec -i tion ofthc device,'these formationsand pro- "r'lSlOIlS,however, being expedients conducing to. theexcellence of the equipment,but i not necessarilv involving invention; I claim I In a flushingapparatus, a casing comprising inlet and outlet passages and avalveseat-opening connecting such passages, and a hollow cylinderthe-chamber ofwhich'ls of greater diameter than that-ofthe'valveseat-opening, a valve having a stem extend ing into thecylinder chamber and provided with a piston fitting and forming amovable wall in said chamber,sa1d valve, lts stem and the piston-havinga contracted passage 'theretliu'ough. forming communication be tween thevalve seat opening and the cylinder chamber, a pressure: relief passageleading from the cylinder chamber and con;- necting with said outletpassage having a rotative cock for openingand closing.sa1ne,:

an adjustable abutment screwfor limiting the thrust of the rack barinzits cock opening movement. '7

Signed by me at Springfield, Mass, in

presence of two subscribing witnesses.

JOHN L. BECK; \Vitnesses DAVID D. Evans, WM. S. BnLLows;

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of- Iatents, Washington, D. G.

